diff options
Diffstat (limited to 'lib/frratomic.h')
| -rw-r--r-- | lib/frratomic.h | 105 |
1 files changed, 65 insertions, 40 deletions
diff --git a/lib/frratomic.h b/lib/frratomic.h index 183790aeb..4ae84c401 100644 --- a/lib/frratomic.h +++ b/lib/frratomic.h @@ -47,7 +47,8 @@ #define atomic_fetch_add_explicit __atomic_fetch_add #define atomic_fetch_sub_explicit __atomic_fetch_sub -#define atomic_compare_exchange_weak_explicit(atom, expect, desire, mem1, mem2) \ +#define atomic_compare_exchange_weak_explicit(atom, expect, desire, mem1, \ + mem2) \ __atomic_compare_exchange_n(atom, expect, desire, 1, mem1, mem2) /* gcc 4.1 and newer, @@ -55,7 +56,7 @@ * * __sync_swap isn't in gcc's documentation, but clang has it * - * note __sync_synchronize() + * note __sync_synchronize() */ #elif defined(HAVE___SYNC) @@ -68,48 +69,72 @@ #define memory_order_acq_rel 0 #define memory_order_seq_cst 0 -#define atomic_load_explicit(ptr, mem) \ - ({ __sync_synchronize(); \ - typeof(*ptr) rval = __sync_fetch_and_add((ptr), 0); \ - __sync_synchronize(); rval; }) -#define atomic_store_explicit(ptr, val, mem) \ - ({ __sync_synchronize(); \ - *(ptr) = (val); \ - __sync_synchronize(); (void)0; }) +#define atomic_load_explicit(ptr, mem) \ + ({ \ + __sync_synchronize(); \ + typeof(*ptr) rval = __sync_fetch_and_add((ptr), 0); \ + __sync_synchronize(); \ + rval; \ + }) +#define atomic_store_explicit(ptr, val, mem) \ + ({ \ + __sync_synchronize(); \ + *(ptr) = (val); \ + __sync_synchronize(); \ + (void)0; \ + }) #ifdef HAVE___SYNC_SWAP -#define atomic_exchange_explicit(ptr, val, mem) \ - ({ __sync_synchronize(); \ - typeof(*ptr) rval = __sync_swap((ptr, val), 0); \ - __sync_synchronize(); rval; }) +#define atomic_exchange_explicit(ptr, val, mem) \ + ({ \ + __sync_synchronize(); \ + typeof(*ptr) rval = __sync_swap((ptr, val), 0); \ + __sync_synchronize(); \ + rval; \ + }) #else /* !HAVE___SYNC_SWAP */ -#define atomic_exchange_explicit(ptr, val, mem) \ - ({ typeof(ptr) _ptr = (ptr); typeof(val) _val = (val); \ - __sync_synchronize(); \ - typeof(*ptr) old1, old2 = __sync_fetch_and_add(_ptr, 0); \ - do { \ - old1 = old2; \ - old2 = __sync_val_compare_and_swap (_ptr, old1, _val); \ - } while (old1 != old2); \ - __sync_synchronize(); \ - old2; \ +#define atomic_exchange_explicit(ptr, val, mem) \ + ({ \ + typeof(ptr) _ptr = (ptr); \ + typeof(val) _val = (val); \ + __sync_synchronize(); \ + typeof(*ptr) old1, old2 = __sync_fetch_and_add(_ptr, 0); \ + do { \ + old1 = old2; \ + old2 = __sync_val_compare_and_swap(_ptr, old1, _val); \ + } while (old1 != old2); \ + __sync_synchronize(); \ + old2; \ }) #endif /* !HAVE___SYNC_SWAP */ -#define atomic_fetch_add_explicit(ptr, val, mem) \ - ({ __sync_synchronize(); \ - typeof(*ptr) rval = __sync_fetch_and_add((ptr), (val)); \ - __sync_synchronize(); rval; }) -#define atomic_fetch_sub_explicit(ptr, val, mem) \ - ({ __sync_synchronize(); \ - typeof(*ptr) rval = __sync_fetch_and_sub((ptr), (val)); \ - __sync_synchronize(); rval; }) - -#define atomic_compare_exchange_weak_explicit(atom, expect, desire, mem1, mem2) \ - ({ typeof(atom) _atom = (atom); typeof(expect) _expect = (expect); \ - typeof(desire) _desire = (desire); \ - __sync_synchronize(); \ - typeof(*atom) rval = __sync_val_compare_and_swap(_atom, *_expect, _desire); \ - __sync_synchronize(); \ - bool ret = (rval == *_expect); *_expect = rval; ret; }) +#define atomic_fetch_add_explicit(ptr, val, mem) \ + ({ \ + __sync_synchronize(); \ + typeof(*ptr) rval = __sync_fetch_and_add((ptr), (val)); \ + __sync_synchronize(); \ + rval; \ + }) +#define atomic_fetch_sub_explicit(ptr, val, mem) \ + ({ \ + __sync_synchronize(); \ + typeof(*ptr) rval = __sync_fetch_and_sub((ptr), (val)); \ + __sync_synchronize(); \ + rval; \ + }) + +#define atomic_compare_exchange_weak_explicit(atom, expect, desire, mem1, \ + mem2) \ + ({ \ + typeof(atom) _atom = (atom); \ + typeof(expect) _expect = (expect); \ + typeof(desire) _desire = (desire); \ + __sync_synchronize(); \ + typeof(*atom) rval = \ + __sync_val_compare_and_swap(_atom, *_expect, _desire); \ + __sync_synchronize(); \ + bool ret = (rval == *_expect); \ + *_expect = rval; \ + ret; \ + }) #else /* !HAVE___ATOMIC && !HAVE_STDATOMIC_H */ #error no atomic functions... |